The genotypes of the parents and offspring were determined by crossing a diheterozygous gray

The genotypes of the parents and offspring were determined by crossing a diheterozygous gray female rabbit with black eyes with a white red-eyed male. White color and red eyes are recessive. Indicate the type of inheritance of the trait and the nature of the splitting.

A diheterozygous female demonstrates dominant traits in the phenotype, therefore, gray fur in rabbits dominates over white, and black eye color over red.

Let’s designate the gene that causes the gray color of rabbit fur as K, then the gene for white fur will be k.

Let’s designate the rabbit red-eye gene as l, then the black-eye gene will be L.

A diheterozygous female KkLl produces four types of eggs – kl, KL, Kl, kL.

A red-eyed male with white fur will have a kkll genotype that is dihomozygous for genes for recessive traits and will produce spermatozoa of the same type – kl.

The offspring of this pair of rabbits will include the following options:

rabbits with red eyes and white fur (kkll) – 25%;

rabbits with black eyes and gray fur (KkLl) – 25%;

rabbits with red eyes and gray fur (Kkll) – 25%;

rabbits with black eyes and white fur (kkLl) – 25%.

The inheritance of traits occurs in an autosomal dominant manner, the splitting of traits in the offspring corresponds to a ratio of 1: 1: 1: 1, which is characteristic of the so-called analyzing cross – heterozygote with a homozygote for a recessive trait.